Jenson Button says he and team mate Sergio Perez are fortunate to be allowed to race each other following their battle in the Bahrain Grand Prix.

Button was critical of Perez after the race, insisting his team mate had been “too aggressive” and banged wheels with him. McLaren cleared the air in a meeting between its drivers and senior management following the grand prix.

“After the race it was important to sit down with the team and Checo and for us all to talk about the race, get it out and move on,” said Button.

“I think we’re very lucky that we were allowed to race. There are a lot of teams where team-mates aren’t allowed to race. But we’d better respect that decision and not take advantage of it.”

Several teams have instructed their drivers not to race each other at different points during the season so far. In Australia Force India told Paul di Resta not to overtake Adrian Sutil for seventh place in the closing stages of the race.

Mercedes gave the same order to Nico Rosberg when he closed on Lewis Hamilton in the next race in Malaysia. Rosberg objected strenuously to the order, but complied.

However Sebastian Vettel did not obey his team when told not to pass Mark Webber for the lead in Malaysia, leading to the most controversial moment of the season so far.

It’s known as “Carburetor Day” – or in its simplest term, just “Carb Day.”

But the final day of on-track action Friday at Indianapolis Motor Speedway before Sunday’s 102nd Running of the Indianapolis 500 is so much more.

Especially on NBCSN, which will have wall-to-wall live coverage starting Friday morning.

Here’s how Friday’s schedule breaks down:

11 a.m. ET: Carb Day kicks off with the final practice for Sunday’s Indy 500. The session will last one hour in length.

12 p.m. ET: We’re going racing! Strap in for coverage of the Indy Lights’ Freedom 100 on the famous Brickyard.

1:30 p.m. ET: We’ll have coverage of the annual IndyCar Pit Stop Challenge. Which teams have the best – and most importantly, fastest and accurate – pit crews? Team Penske has won 10 of the last 12, including the last two years edging out Schmidt Peterson Motorsports each time. Who can potentially beat them this year?

3:30 p.m. ET: We’ll have our annual NASCAR America Motorsports Special. Among segments included in the 90-minute show will be:1) 2016 Indy 500 winner Alexander Rossi will discuss how it used to upset him when people suggested he “backed into” his big win and how he didn’t really feel vindicated until he qualified on the front row for last year’s race.
2) Defending 500 winner Takuma Sato, the first Japanese driver to ever win at Indianapolis, discusses the impact of his big win personally and professionally, particularly back in his native land.
3) An essay by Robin Miller on Stefan Wilson giving up his ride last year to allow Fernando Alonso to race for Andretti Autosport.
4) An essay by Nate Ryan on Danica Patrick as she looks to compete in her final Indy 500 before retiring from professional racing.